Humminbird XTH 9 DB 74 P Manual page 3

Plastic Thru-Hull Transducer
CAUTION! To avoid damage, do not overtighten the nut.
9. Remove the excess adhesive sealant from the outside of the hull to ensure smooth water flow over the
transducer.
4.
Routing the Cable
The transducer cable must be routed to the point where the control head is mounted.
NOTE: Your boat may have a pre-existing wiring channel or conduit that you can use for the transducer cable.
1. Unplug the other end of the transducer cable from the control head.
CAUTION! Do not cut or shorten the transducer cable, and try not to damage the cable insulation. Route the cable as far
as possible from any VHF radio antenna cables or tachometer cables to reduce the possibility of interference. If the cable is
too short, extension cables are available to extend the transducer cable up to a total of 50'.
CAUTION! Do NOT mount the cables where the connectors could be submerged in water or flooded. If cables are installed
in a splash-prone area, it may be helpful to apply dielectric grease to the inside of the connectors to prevent corrosion.
Dielectric grease can be purchased separately from a general hardware or automotive store.
2. Route and secure the cable, avoiding areas where it may be damaged or interfere with normal
boating operations.I
5.
Connecting the Cable
Refer to your manual and/or control head installation guide for the correct procedure for installing the cable
connectors to the control head. Whether through the cable collector or directly to the control head, insert the
transducer cable connector into the appropriate slot or port. The cable connectors are labeled, and there are
corresponding labels on the cable collector and control head. The connectors are keyed to prevent reversed
installation, and insertion should be easy— do not force the connectors into the ports.
NOTE: If the connector on the cable is round, it has a screw nut (see the illustration Transducer Connectors). Hand
tighten the screw nut to secure the cable connection. Hand tighten only!
6.
Setting up the Transducer on the Control Head
Use the following instructions to set the transducer type in the control head. When you select the transducer type,
the related views and menus will be added to the system. Before you proceed, review the following information:
• If your transducer has the round connector, see your Humminbird® control head operations manual to set
up the transducer sources on the control head. The instructions in this section do not apply to your fishing
system.
• If your fishfinder is a PiranhaMAX, or does not include the Transducer Select or Connected Transducer
menu option, no further action is required. The transducer will be detected automatically if it is compatible
with the control head. See your control head operations manual for details.
• If the transducer you've purchased is not compatible with your Humminbird® control head, the unit will
not function properly.
1. Press the POWER/LIGHT key to power on the control head.
2. Press the MENU key. When the control head detects a functioning transducer, it will automatically enter Normal
operating mode. Follow the on-screen prompts.
3. Main Menu: Press the Menu key twice.
4. Use the 4-WAY Cursor Control key to select the Sonar tab > Transducer Select or Connected Transducer.
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Transducer Connectors
Screw
Nut
Hexagon-Shaped
Connector Connector
Round